/*
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 */
package corg;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.DriverManager;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.*;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author cloud
 */
public class ajaxServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        /*try (PrintWriter out = response.getWriter()) {
         /* TODO output your page here. You may use following sample code. 
         out.println("<!DOCTYPE html>");
         out.println("<html>");
         out.println("<head>");
         out.println("<title>Servlet ajaxServlet</title>");            
         out.println("</head>");
         out.println("<body>");
         out.println("<h1>Servlet ajaxServlet at " + request.getContextPath() + "</h1>");
         out.println("</body>");
         out.println("</html>");
        
         }*/
        String param = request.getParameter("myVar");

        PrintWriter out = response.getWriter();

        Connection conn = null;
        Statement st = null;
        ResultSet rs = null;
        try {
            Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(ajaxServlet.class.getName()).log(Level.SEVERE, null, ex);
        }

        try {
            conn = DriverManager.getConnection("jdbc:derby://localhost:1527/sample", "app", "app");

            st = conn.createStatement();
            rs = st.executeQuery("select name from city where name like '%" + param + "%'");
            
            while(rs.next()){
               out.println(rs.getString("name"));
            }
            
            rs.close();
            st.close();
            conn.close();
            
            
        } catch (SQLException ex) {
            Logger.getLogger(ajaxServlet.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
